CN113145824A - Forming die suitable for large-area thin-wall product - Google Patents

Abstract

The utility model provides a forming die suitable for large tracts of land thin wall product, its includes upper die base subassembly, goes up the mould subassembly, and the lower mould subassembly, exhaust subassembly, pouring subassembly and side moulding-die assembly down. The upper die assembly comprises an upper die body and a forming groove. The lower die assembly comprises a lower die body, a forming lug, a flow channel and an inverted buckle. The shaping recess with form the shaping cavity between the shaping lug, the runner includes the sprue to and the subchannel, the subchannel with the opening size of the one end of shaping cavity intercommunication is greater than the sprue with the opening size of the one end of shaping cavity intercommunication to make more even and improve filling speed and solution mobility of filling, avoid leading to the die casting defect to appear because of the mould is heated inhomogeneously or fills discontently. The back-off one end sets up on the lower membrane body, the other end is detained and is established go up on the mould body, make the compound die inseparabler, avoid leading to the die casting deckle edge to appear because of the compound die is bad.

Description

Forming die suitable for large-area thin-wall product

Technical Field

The invention relates to the technical field of die-casting forming dies, in particular to a forming die suitable for large-area thin-wall products.

Background

The die casting mould is a mould which is manufactured according to the shape and the structure of a real object in proportion, and the material is made into a tool with a certain shape by a pressing or pouring method. The principle is that the die-casting raw material is added into a preheated feeding chamber, then pressure is applied to a compression column, the die-casting raw material is melted at high temperature and high pressure, and is injected into a cavity through a pouring system of a die or directly injected into the cavity with a die-casting solution, and then the die-casting solution is gradually hardened into a die-casting piece 100. As shown in fig. 4, the wall thickness of the die casting 100 at the smallest part is only 1.5 mm, and one end of the die casting 100 is provided with two extending sections 110 extending from one end of the die casting 100, and the two extending sections 110 are arranged at intervals. Because the wall thickness of some large-area thin-wall die castings is too thin and the projection area is too large, the inner space of a forming die is very small, so that the fluidity of the die-casting solution is poor, the die-casting solution cannot be rapidly formed in a cavity, and even the problem of insufficient filling can be caused. And because the die casting has small wall thickness, the die casting produced by die casting can be deformed once the die assembly is poor.

Disclosure of Invention

In view of the above, the present invention provides a forming mold suitable for large-area thin-walled products, so as to solve the above technical problems.

The forming die is used for pouring a die casting solution into a die casting piece, the die casting piece is provided with two extension sections extending out from one end of the die casting piece, and the two extension sections are arranged at intervals. The forming die suitable for large-area thin-wall products comprises an upper die holder assembly, an upper die assembly arranged on the upper die holder assembly, a lower die holder assembly matched with the upper die holder assembly, and a lower die assembly arranged on the lower die holder assembly. The upper die assembly comprises an upper die body arranged on the upper die seat assembly and a forming groove arranged on the end face of the upper die body. The lower die assembly comprises a lower die body arranged in the lower die seat assembly, a forming lug arranged on the lower die body, a flow channel arranged on the lower die body and two reverse buckles arranged on the lower die body. The forming convex blocks are matched with the forming grooves, and after the upper die assembly and the lower die assembly are matched, the forming grooves and the forming convex blocks are arranged at intervals, so that forming cavities are formed between the forming grooves and the forming convex blocks. The runner includes that one sets up sprue on the lower mould body, and two settings are in subchannel on the lower mould body. One end of the main runner is communicated with one end of the forming cavity, and the other end of the main runner is communicated with the sub-runners in an intersecting manner. One end of the branch channel is communicated with two sides of the forming cavity, and the other end of the branch channel is communicated with the main channel in an intersecting manner. The opening size of one end of the sub-runner communicated with the forming cavity is larger than that of one end of the main runner communicated with the forming cavity. One end of the reverse buckle is arranged on the lower film body, and the other end of the reverse buckle is arranged on the upper film body in a buckled mode.

Furthermore, the forming die suitable for large-area thin-wall products further comprises an exhaust assembly arranged on the lower die assembly, a pouring assembly arranged on the upper die holder assembly and a side die assembly arranged on the lower die holder assembly.

Further, the upper die holder assembly comprises an upper die holder and a pouring hole arranged on the upper die holder.

Further, the pouring component is arranged in the pouring hole, a pouring port is formed between the pouring component and the lower film body, and the pouring port is located between the pouring component and the main runner and between the main runner and the sub-runners.

Further, the thickness of the gate is greater than the thickness of the die cast part.

Furthermore, go up the mould subassembly and still include one and set up the mouth of dodging of going up mould body one end, and two settings are in go up the opening of mould body other end.

Further, the exhaust assembly comprises a plurality of exhaust grooves formed in the lower die body, a plurality of waste grooves formed in the exhaust grooves, at least two lower exhaust blocks arranged on the lower die body, and at least two upper exhaust blocks arranged on the upper die body.

Furthermore, the exhaust grooves are respectively positioned on one side of the two extension sections of the die casting, one end of each exhaust groove is connected with the forming cavity, and the other end of each exhaust groove is connected with the upper exhaust block and the lower exhaust block.

Furthermore, the lower exhaust block is provided with a plurality of connected wavy convex blocks, the upper exhaust block is concavely provided with a plurality of connected grooves, after die assembly, the convex blocks are inserted in the grooves, and gaps are reserved between the convex blocks and the grooves.

Furthermore, the side die assembly comprises two slide rails arranged on the lower die base, a slide block arranged on the slide rails in a sliding manner, a pressing block arranged on the slide block, and a slide rod obliquely arranged on the upper die base, wherein the pressing block is pressed on the extension section.

Compared with the prior art, the runner of the forming die suitable for large-area thin-wall products comprises a main runner and two sub-runners. One end of the main runner is communicated with one end of the forming cavity, and the other end of the main runner is intersected with the sub-runner. One end of the branch channel is communicated with two sides of the forming cavity, and the other end of the branch channel is intersected with the main channel. The opening size of one end of the sub-runner communicated with the forming cavity is larger than that of one end of the main runner communicated with the forming cavity, so that the forming cavity is filled more uniformly, the filling speed and the solution fluidity are improved, and the defect of a die casting caused by nonuniform heating or insufficient filling of a die casting is avoided. The back-off is buckled after die assembly and is arranged on the upper die body, so that the strength after die assembly is improved, the die assembly is more compact, and the problem that burrs appear on a die casting due to poor die assembly of the die casting is avoided. The exhaust grooves are respectively located on one side of the extension section and are arranged in a concentrated mode, so that air can be exhausted more quickly, the exhaust effect is improved, and the air is prevented from being concentrated in the extension section to prevent the die casting from deforming.

Drawings

Fig. 1 is an exploded structural schematic diagram of a forming mold suitable for large-area thin-walled products according to the present invention.

Fig. 2 is a structural view of an upper mold assembly of the molding die of fig. 1, which is suitable for a large-area thin-walled product.

Fig. 3 is a schematic structural diagram of the upper die assembly and the upper die holder assembly of the forming die suitable for large-area thin-wall products in fig. 1, which are removed.

Fig. 4 is a schematic structural diagram of a die casting of the forming die suitable for large-area thin-wall products in fig. 1.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

Fig. 1 to 4 are schematic structural diagrams of a forming mold suitable for large-area thin-walled products according to the present invention. The forming die suitable for large-area thin-wall products comprises an upper die holder assembly 10, an upper die assembly 20 arranged on the upper die holder assembly 10, a lower die holder assembly 30 matched with the upper die holder assembly 10, a lower die assembly 40 arranged on the lower die holder assembly 30, an exhaust assembly 50 arranged on the lower die assembly 40, a pouring assembly 60 arranged on the upper die holder assembly 10, and a side die assembly 70 arranged on the lower die holder assembly 30. It is understood that the forming mold for large-area thin-walled products may further include other functional modules, such as an assembling component, a guiding component, a temperature adjusting component, and an ejector pin component, which are well known to those skilled in the art and will not be described herein again.

It should be noted that the molding die suitable for a large-area thin-walled product is used for casting a die casting solution into a die casting 100. The die casting 100 has a wall thickness of 1.5 mm at the smallest wall thickness, and is provided with two extension sections 110 extending from one end of the die casting 100, and the two extension sections 110 are spaced apart from each other. It is contemplated that the die casting 100 itself should be a prior art, and will not be described in detail herein.

The upper die holder assembly 10 includes an upper die holder 11, and a pouring hole 12 provided in the upper die holder 11.

The upper die holder 11 is communicated with an external moving device, and the external moving device drives the upper die holder assembly 10 to reciprocate along the arrangement direction of the upper die holder assembly 10 and the lower die holder assembly 30, so that the upper die assembly 20 and the lower die assembly 40 can be opened or closed. An upper mold core mounting groove is formed in one end face, facing the lower mold assembly 40, of the upper mold base 11, and the upper mold core mounting groove is used for arranging the upper mold assembly 20. The pouring orifice 12 is used for arranging a pouring assembly 60.

Go up mould subassembly 20 and include that one sets up last mould body 21 on the upper die base 11, one sets up the shaping recess 22 on the last mould body 21, one sets up the mouth 23 of dodging of going up mould body 21 one end, and two settings are in go up the opening 24 of mould body 21 other end.

The upper die body 21 moves together with the upper die base 11 and is used for arranging the above functional components. The molding groove 22 is provided on one end surface of the upper mold body 21 facing the lower mold assembly 40, and after the upper mold assembly 20 and the lower mold assembly 40 are closed, the molding groove 22 and the molding projection 42 are provided at an interval, so that a molding cavity is formed between the molding groove 22 and the molding projection 42. The molding cavity is used for containing a die casting solution, and after the die casting solution is cooled and hardened, the die casting 100 is formed. The avoiding opening 23 is formed in one end of the upper die body 21, is positioned between the upper die body 21 and the pouring component 60, and is attached to the pouring component 60. The opening 24 is disposed at the other end of the upper die body 21 and opposite to the avoiding opening 23. The opening 24 communicates with the molding cavity, and the opening 24 is used for avoiding the side die assembly 70, so that the side die assembly 70 can extend into the upper die body 21.

The lower die holder assembly 30 is located directly below the upper die holder 12. And a lower mold core mounting groove is formed in one end surface, facing the lower mold assembly 40, of the lower mold base assembly 30. The lower mold core mounting groove is used for arranging a lower mold assembly 40. It is contemplated that the lower membrane seat assembly 30 should be provided with other functional components, such as a thimble mechanism, a guiding mechanism, etc., and the shape thereof can be set according to actual needs, which is prior art and will not be described herein.

The lower die assembly 40 includes a lower die body 41 disposed in the lower die base assembly 30, a forming protrusion 42 disposed on the lower die body 41, a runner 43 disposed on the lower die body 41, and two undercuts 44 disposed on the lower die body 41.

The lower die body 41 is disposed in the lower die groove. The molding protrusions 42 are engaged with the molding grooves 22, and are used for forming a molding cavity after being matched with the molding grooves 22, and the die casting 100 is molded in the molding cavity.

The runner 43 includes a main runner 431 provided on the lower mold body 41, and two branch runners 432 provided on the lower mold body 21. One end of the main flow passage 431 is communicated with one end of the molding cavity, and the other end is communicated with the sub flow passage 432 in an intersecting manner so as to feed the die-casting solution into the sub flow passage 432. One end of the branch channel 432 is communicated with both sides of the molding cavity, and the other end is communicated with the main channel 431 in an intersecting manner. The main runner 431 and the branch runner 432 are communicated with the pouring assembly 60 at the end where they are mutually communicated in an intersection way. The casting solution flows into the molding cavity through the main flow passage 431 and the sub flow passages 432. The opening size of one end, communicated with the forming cavity, of the sub-runner 432 is larger than that of one end, communicated with the forming cavity, of the main runner 431, so that the forming cavity is filled more uniformly, the filling speed is increased, and defects of die castings caused by nonuniform heating or insufficient filling of the die castings are avoided.

One end of the reverse buckle 44 is arranged on the lower film body 41, and the other end of the reverse buckle is arranged on the upper film body 21, so that the upper and lower film assemblies 20 and 40 are firmer after being matched, the strength after being matched is improved, and the problem that burrs occur to die castings due to poor die matching of the dies is avoided.

The air discharge assembly 50 includes a plurality of air discharge grooves 51 provided on the lower die body 41, a plurality of waste grooves 52 provided in the air discharge grooves 51, at least two lower discharge blocks 53 provided on the lower die body 41, and at least two upper discharge blocks 54 provided on the upper die body 21.

The exhaust grooves 51 are located on one side of the two extension sections 110 of the die cast part 100. The air discharge groove 51 has one end connected to the molding cavity and the other end connected to the upper and lower air discharge blocks 53 and 52, thereby discharging air into the upper and lower air discharge blocks 52 and 53. The exhaust grooves 51 are located on one side of the extension section 110 and are arranged in a concentrated mode, so that air can be exhausted more quickly, the exhaust effect is improved, air is prevented from being concentrated in the extension section 110, and meanwhile air is prevented from remaining in the forming cavity to prevent the die casting from being deformed. A plurality of the waste tanks 52 are provided on each of the exhaust grooves 51 and communicate with the exhaust grooves 51, and the waste tanks 52 can collect excess die casting solution to prevent the exhaust grooves 51 from being clogged with the die casting solution.

The top surface of the lower exhaust block 53 is flush with the top surface of the lower die body 41, the bottom surface of the upper exhaust block 54 is flush with the bottom surface of the upper die body 21, and when the upper die body 21 and the lower die body 41 are closed, the lower exhaust block 53 and the upper exhaust block 54 are closed with each other. The lower exhaust block 53 is provided with a plurality of connected wavy projections 531, and the upper exhaust block 54 is concavely provided with a plurality of connected grooves 541. After the die is assembled, the convex block 531 is inserted into the groove 541, and a gap is formed between the convex block 531 and the groove 541, so that the exhaust speed can be reduced, the safety is ensured, meanwhile, the material solution can be effectively resisted, and the phenomenon that the material solution rushes out of the upper and lower exhaust blocks 53 and 52 to cause material flying is avoided.

The pouring assembly 60 is disposed in the pouring hole 12 and forms a pouring gate 61 with the lower membrane body 41. The pouring gate 61 is positioned between the pouring assembly 60 and the main runner 431 and the branch runners 432, and the thickness of the pouring gate 61 is larger than that of the die casting 100, so that the pouring gate 61 has stronger liquidity and the filling speed is improved.

The side die assembly 70 includes two slide rails 71 disposed on the lower die base 41, a slide block 72 slidably disposed on the slide rails 71, a pressing block 73 disposed on the slide block 72, and a slide bar 74 obliquely disposed on the upper die base 11.

Two ends of the sliding block 72 are respectively slidably disposed on the two sliding rails 71, so that the sliding block 72 can slide along the sliding rails 71. The two pressing pieces 73 are located between the sliding block 72 and the forming cavity and move together with the sliding block 72, and the pressing pieces 73 extend into the opening 24 and press on the extension section 110. One end of the sliding rod 74 is fixedly arranged on the upper die base 11, and the other end is inserted into the sliding block 72. When the mold separation is performed, the upper die holder assembly 10 is separated from the lower die holder assembly 30. Due to the inclined arrangement of the slide rod 74, the slide block 72 slides along the central axis direction of the slide rod 74 under the driving action of the lower die holder assembly 30 and the guiding action of the slide rod 74 and the slide rail 71, and drives the pressing block 73 to move, so that the pressing block 73 is drawn out of the opening 24 and is not pressed against the extension section 110, and then the die casting 100 is taken out.

Compared with the prior art, the runner 43 of the forming die suitable for large-area thin-wall products provided by the invention comprises a main runner 431 and two sub-runners 432. One end of the main runner 431 is communicated with one end of the molding cavity, and the other end of the main runner 431 is intersected with the sub-runner 432. One end of the sub-runner 432 is communicated with both sides of the molding cavity, and the other end is intersected with the main runner 431. The opening size of one end, communicated with the forming cavity, of the sub-flow passage 432 is larger than that of one end, communicated with the forming cavity, of the main flow passage 431, so that the forming cavity is filled more uniformly, the filling speed and the solution fluidity are improved, and defects of die castings caused by nonuniform heating or insufficient filling of the die castings are avoided. The reverse buckle 44 is buckled on the upper die body 21 after die assembly, so that the strength after die assembly is improved, die assembly is tighter, and the problem that burrs occur to die castings due to poor die assembly of the die castings is avoided. The exhaust grooves 51 are respectively positioned on one side of the extension section 110 and are intensively arranged, so that air can be exhausted more quickly, the exhaust effect is improved, and the air is prevented from being concentrated in the extension section 110 to prevent the die casting from being deformed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.

Claims (10)

1. A forming die suitable for large-area thin-wall products is used for pouring a die casting solution into a die casting, the die casting is provided with two extension sections extending out from one end of the die casting, and the two extension sections are arranged at intervals and are characterized in that: the forming die suitable for large-area thin-wall products comprises an upper die holder component, an upper die component arranged on the upper die holder component, a lower die holder component matched with the upper die holder component, and a lower die component arranged on the lower die holder component, wherein the upper die component comprises an upper die body arranged on the upper die holder component, and a forming groove arranged on the end surface of the upper die body, the lower die component comprises a lower die body arranged in the lower die holder component, a forming lug arranged on the lower die body, a flow channel arranged on the lower film body, and two back-off buttons arranged on the lower film body, the forming lug is matched with the forming groove, and after the upper die component and the lower die component are matched, the forming groove and the forming lug are arranged at intervals, make the shaping recess with form the molding cavity between the shaping lug, the runner includes that one sets up sprue on the lower mould body, and two settings are in sprue on the lower mould body, sprue one end with the one end intercommunication of molding cavity, the other end with the sprue intercommunication that crosses, sprue one end with the both sides intercommunication of molding cavity, the other end with the sprue intercommunication that crosses, the sprue with the opening size of the one end of molding cavity intercommunication is greater than the sprue with the opening size of the one end of molding cavity intercommunication, back-off one end sets up on the lower membrane body, the other end is detained and is established on the last mould body.

2. The forming die suitable for large-area thin-walled products of claim 1, wherein: the forming die suitable for large-area thin-wall products further comprises an exhaust assembly arranged on the lower die assembly, a pouring assembly arranged on the upper die holder assembly and a side die assembly arranged on the lower die holder assembly.

3. The forming die suitable for large-area thin-walled products according to claim 2, wherein: the upper die holder assembly comprises an upper die holder and a pouring hole arranged on the upper die holder.

4. The forming die suitable for large-area thin-walled products of claim 3, wherein: the pouring component is arranged in the pouring hole, a pouring port is formed between the pouring component and the lower film body, and the pouring port is located between the pouring component and the main runner as well as between the pouring port and the sub-runner.

5. The forming die suitable for large-area thin-walled products of claim 4, wherein: the thickness of the pouring gate is greater than the thickness of the die casting.

6. The forming die suitable for large-area thin-walled products of claim 1, wherein: the upper die assembly further comprises an avoiding opening arranged at one end of the upper die body and two openings arranged at the other end of the upper die body.

7. The forming die suitable for large-area thin-walled products of claim 1, wherein: the exhaust assembly comprises a plurality of exhaust grooves formed in the lower die body, a plurality of waste grooves formed in the exhaust grooves, at least two lower exhaust blocks arranged on the lower die body, and at least two upper exhaust blocks arranged on the upper die body.

8. The forming die suitable for large-area thin-walled products of claim 7, wherein: the exhaust grooves are respectively positioned on one sides of the two extension sections of the die casting, one end of each exhaust groove is connected with the forming cavity, and the other end of each exhaust groove is connected with the upper exhaust block and the lower exhaust block.

9. The forming die suitable for large-area thin-walled products of claim 7, wherein: the lower exhaust block is provided with a plurality of connected wavy convex blocks, the upper exhaust block is concavely provided with a plurality of connected grooves, after die assembly is carried out, the convex blocks are inserted in the grooves, and gaps are reserved between the convex blocks and the grooves.

10. The forming die suitable for large-area thin-walled products of claim 1, wherein: the side die assembly comprises two sliding rails arranged on the lower die base, a sliding block arranged on the sliding rails in a sliding mode, a pressing block arranged on the sliding block, and a sliding rod arranged on the upper die base in an inclined mode, and the pressing block is pressed on the extension section.

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